all: replace use of io/ioutil

Removes an import from the generated files.

Fixes #48.

Makefile

@@ -32,6 +32,9 @@ race-test: lint go-race-test
 $(GOPATH)/bin/go-bindata:
 	go install -v ./...
 
+testdata/assets/bindata.go:
+	go-bindata -o testdata/assets/bindata.go -pkg assets ./testdata/benchmark
+
 $(BENCHSTAT):
 	go get golang.org/x/perf/cmd/benchstat
 

benchmark_test.go

@@ -2,7 +2,6 @@ package bindata_test
 
 import (
 	"go/format"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -27,7 +26,7 @@ func BenchmarkBindata(b *testing.B) {
 		b.Fatal(err)
 	}
 	b.SetBytes(size)
-	outDir, err := ioutil.TempDir("", "bench_bindata")
+	outDir, err := os.MkdirTemp("", "bench_bindata")
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -59,7 +58,7 @@ var formatSink []byte
 func BenchmarkFormatSource(b *testing.B) {
 	// https://github.com/golang/go/issues/26528
 	// unformatted.out is any large go-bindata source file.
-	data, err := ioutil.ReadFile("testdata/unformatted.out")
+	data, err := os.ReadFile("testdata/unformatted.out")
 	if os.IsNotExist(err) {
 		b.Skip("source file does not exist")
 		return

debug.go

@@ -32,15 +32,14 @@ func writeDebugHeader(w io.Writer) error {
 	_, err := fmt.Fprintf(w, `import (
 	"crypto/sha256"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
 )
 
 // bindataRead reads the given file from disk. It returns an error on failure.
 func bindataRead(path, name string) ([]byte, error) {
-	buf, err := ioutil.ReadFile(path)
+	buf, err := os.ReadFile(path)
 	if err != nil {
 		err = fmt.Errorf("Error reading asset %%s at %%s: %`+wrappedError+`", name, path, err)
 	}

release.go

@@ -10,7 +10,6 @@ import (
 	"crypto/sha256"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"unicode"
 	"unicode/utf8"
@@ -148,7 +147,6 @@ func header_compressed_nomemcopy(w io.Writer) error {
 	"crypto/sha256"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -187,7 +185,6 @@ func header_compressed_memcopy(w io.Writer) error {
 	"crypto/sha256"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -222,7 +219,6 @@ func header_uncompressed_nomemcopy(w io.Writer) error {
 	_, err := fmt.Fprintf(w, `import (
 	"crypto/sha256"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -250,7 +246,6 @@ func header_uncompressed_memcopy(w io.Writer) error {
 	_, err := fmt.Fprintf(w, `import (
 	"crypto/sha256"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -400,7 +395,7 @@ func uncompressed_memcopy(w io.Writer, asset *Asset, r io.Reader) error {
 		return err
 	}
 
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		return err
 	}

release_test.go

@@ -3,7 +3,7 @@ package bindata
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 	"testing"
 )
@@ -30,7 +30,7 @@ func TestSanitize(t *testing.T) {
 
 func TestEncode(t *testing.T) {
 	t.Skip("used to test unicode ranges")
-	data, err := ioutil.ReadFile("testdata/fa.js")
+	data, err := os.ReadFile("testdata/fa.js")
 	if err != nil {
 		t.Fatal(err)
 	}

restore.go

@@ -25,7 +25,7 @@ func RestoreAsset(dir, name string) error {
 	if err != nil {
 		return err
 	}
-	err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode())
+	err = os.WriteFile(_filePath(dir, name), data, info.Mode())
 	if err != nil {
 		return err
 	}

safefile_test.go

@@ -7,15 +7,14 @@ package bindata
 import (
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
 	"time"
 )
 
 func ensureFileContains(name, data string) error {
-	b, err := ioutil.ReadFile(name)
+	b, err := os.ReadFile(name)
 	if err != nil {
 		return err
 	}
@@ -141,7 +140,7 @@ func TestOverwriting(t *testing.T) {
 	defer os.Remove(name)
 
 	olddata := "This is old data"
-	err := ioutil.WriteFile(name, []byte(olddata), 0600)
+	err := os.WriteFile(name, []byte(olddata), 0600)
 	if err != nil {
 		t.Fatal(err)
 	}